21<^ 



GSNUS X. RAPHISTEMMA." 

 Pentanilria Digynla. Sex: Systi 



Deriv, From Rwphis, a needle, and Stemma, a crown. 



Gen. Chae. Corolla campanulate, limb 5-partite : stamina! 

 corona 5-leaved : leaflets compressed, elongated : anthers termi- 

 nated by a membrane : pollen-masses affixed under the apex, pen- 

 dnlous : stigma obtusely conical . follicles often (by abortion) 

 solitary, subventricose : seeds comose. 



(1) R. PXJLCIIELLUM. (Wall.) 



Jdent. Wight's Contrib. 54.— Dec. prod. VIII. p. 5i6, 



Syn. Asclepias pulchella, Roxh. flor. Ind. II. jp. 54. 



Engrav. Wall. PI. As. Rar. 11. t, 163. 



Spec. Char. Glabrous twining shrub : leaves largish, cordate; 

 flowers corymbose, whitish. 



Silhet. 



GEISrUS XI. CYNOCTONUlif. 



Pentandria Disynia. Sex; Sysii 



Derii). IVom Kuon, a dog, and Kteno, to kill ; alluding toi it4 

 poisonous qualities. 



Gen. Chae. Perennial herbs or shrubs often twining : leave3 

 cordate, often with diphylloiis axils : peduncles extra-axillary, 

 iiiaiiy-flowered : calyx 5-parted : corolla rotate, 5-partite : sta- 

 minal corona tubular, plicate, dimple, 5-crenate or 10-cleft at the 

 mouth : anthers terminated by a membrane : pollen-masses club- 

 shaped, slightly compressed, affixed to the attenuated apex, pen- 

 dulous : stigma flat, 2-lobed, or attenuated into a 2-cleft papillose 

 point : follicles slender, smooth, reflexed : seeds comose. 



(1) C. coRYMBOsuM. {Dec.') 



Ident. i)ec. prod. VIII. p. 528. 



Syn. Cynanchum corymbosum, Wight's Contrib. p. 56. 



Spec. Char. Twining : leaves ovate, cordate, with parallet 

 iuricles, attenuated at the apex, glaucous below, long-petioled, 

 glanduliferous above the petiole : peduncles many-flowered : sta- 

 minal corona 10-crenated at the mouth : toothlets alternate, shorter; 

 inner keels simple : pollen-masses affixed below the apex : stigrn^ 

 with an 8-cIeft point. 



Silhet, 



